/*
 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package com.sun.corba.se.spi.logging;

import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.LogRecord;

public abstract class LogWrapperBase {
    protected Logger logger;

    protected String loggerName;

    protected LogWrapperBase(Logger logger) {
        this.logger = logger;
        this.loggerName = logger.getName();
    }

    protected void doLog(Level level, String key, Object[] params, Class wrapperClass, Throwable thr) {
        LogRecord lrec = new LogRecord(level, key);
        if (params != null)
            lrec.setParameters(params);
        inferCaller(wrapperClass, lrec);
        lrec.setThrown(thr);
        lrec.setLoggerName(loggerName);
        lrec.setResourceBundle(logger.getResourceBundle());
        logger.log(lrec);
    }

    private void inferCaller(Class wrapperClass, LogRecord lrec) {
        // Private method to infer the caller's class and method names

        // Get the stack trace.
        StackTraceElement stack[] = (new Throwable()).getStackTrace();
        StackTraceElement frame = null;
        String wcname = wrapperClass.getName();
        String baseName = LogWrapperBase.class.getName();

        // The top of the stack should always be a method in the wrapper class,
        // or in this base class.
        // Search back to the first method not in the wrapper class or this class.
        int ix = 0;
        while (ix < stack.length) {
            frame = stack[ix];
            String cname = frame.getClassName();
            if (!cname.equals(wcname) && !cname.equals(baseName)) {
                break;
            }

            ix++;
        }

        // Set the class and method if we are not past the end of the stack
        // trace
        if (ix < stack.length) {
            lrec.setSourceClassName(frame.getClassName());
            lrec.setSourceMethodName(frame.getMethodName());
        }
    }

    protected void doLog(Level level, String key, Class wrapperClass, Throwable thr) {
        doLog(level, key, null, wrapperClass, thr);
    }
}
